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    dinz's Avatar
    dinz Posts: 4, Reputation: 1
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    #1

    Sep 15, 2012, 07:37 AM
    3. 84 g of water at 22oC are mixed with 150 g of ethanol at 88oC.
    84 g of water at 22 oC are mixed with 150 g of ethanol (C=2.44 J/g.oC) at 88 oC. Find the final temperature of the system.

    Help asap... thanks
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #2

    Sep 15, 2012, 07:39 AM
    Heat gained by water = Heat lost by ethanol

    Formula for each gain/loss: Q = mcT

    Q is amount of heat,
    m is mass of substance,
    c is the specific heat capacity
    T is the change in temperature. (Final temp. - Initial temp.)

    What do you get?
    dinz's Avatar
    dinz Posts: 4, Reputation: 1
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    #3

    Sep 15, 2012, 07:46 AM
    The right answer is 55.7 oC but I don't know how it was solved.
    dinz's Avatar
    dinz Posts: 4, Reputation: 1
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    #4

    Sep 15, 2012, 07:55 AM
    if u plug in the values in your equation, it wouldn't give this final answer, could you show me the solution?
    dinz's Avatar
    dinz Posts: 4, Reputation: 1
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    #5

    Sep 15, 2012, 07:57 AM
    if u plug in the values in your equation, it wouldn't give this final answer (55.7 oC), could you show me the solution? I've been trying to find the solution but I couldn't find this answer.

    Formula for each gain/loss: Q = mcT

    Q is amount of heat,
    m is mass of substance,
    c is the specific heat capacity
    T is the change in temperature. (Final temp. - Initial temp.)

    What do you get?[/QUOTE]
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #6

    Sep 15, 2012, 08:06 AM
    Could you show how you plugged the values in the equation?
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